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qemu-e2k/hw/audio/cs4231a.c
Juan Quintela d49805aeea savevm: Remove all the unneeded version_minimum_id_old (x86) 
After previous Peter patch, they are redundant.  This way we don't
assign them except when needed.  Once there, there were lots of case
where the ".fields" indentation was wrong:

     .fields = (VMStateField []) {
and
     .fields =      (VMStateField []) {

Change all the combinations to:

     .fields = (VMStateField[]){

The biggest problem (appart from aesthetics) was that checkpatch complained
when we copy&pasted the code from one place to another.

Signed-off-by: Juan Quintela <quintela@redhat.com>
Acked-by: Alexey Kardashevskiy <aik@ozlabs.ru>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
2014-06-16 04:55:26 +02:00

708 lines
21 KiB
C
Raw Blame History

/*
* QEMU Crystal CS4231 audio chip emulation
*
* Copyright (c) 2006 Fabrice Bellard
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
* THE SOFTWARE.
*/
#include "hw/hw.h"
#include "hw/audio/audio.h"
#include "audio/audio.h"
#include "hw/isa/isa.h"
#include "hw/qdev.h"
#include "qemu/timer.h"
/*
Missing features:
ADC
Loopback
Timer
ADPCM
More...
*/
/* #define DEBUG */
/* #define DEBUG_XLAW */
static struct {
int aci_counter;
} conf = {1};
#ifdef DEBUG
#define dolog(...) AUD_log ("cs4231a", __VA_ARGS__)
#else
#define dolog(...)
#endif
#define lwarn(...) AUD_log ("cs4231a", "warning: " __VA_ARGS__)
#define lerr(...) AUD_log ("cs4231a", "error: " __VA_ARGS__)
#define CS_REGS 16
#define CS_DREGS 32
#define TYPE_CS4231A "cs4231a"
#define CS4231A(obj) OBJECT_CHECK (CSState, (obj), TYPE_CS4231A)
typedef struct CSState {
ISADevice dev;
QEMUSoundCard card;
MemoryRegion ioports;
qemu_irq pic;
uint32_t regs[CS_REGS];
uint8_t dregs[CS_DREGS];
uint32_t irq;
uint32_t dma;
uint32_t port;
int shift;
int dma_running;
int audio_free;
int transferred;
int aci_counter;
SWVoiceOut *voice;
int16_t *tab;
} CSState;
#define MODE2 (1 << 6)
#define MCE (1 << 6)
#define PMCE (1 << 4)
#define CMCE (1 << 5)
#define TE (1 << 6)
#define PEN (1 << 0)
#define INT (1 << 0)
#define IEN (1 << 1)
#define PPIO (1 << 6)
#define PI (1 << 4)
#define CI (1 << 5)
#define TI (1 << 6)
enum {
Index_Address,
Index_Data,
Status,
PIO_Data
};
enum {
Left_ADC_Input_Control,
Right_ADC_Input_Control,
Left_AUX1_Input_Control,
Right_AUX1_Input_Control,
Left_AUX2_Input_Control,
Right_AUX2_Input_Control,
Left_DAC_Output_Control,
Right_DAC_Output_Control,
FS_And_Playback_Data_Format,
Interface_Configuration,
Pin_Control,
Error_Status_And_Initialization,
MODE_And_ID,
Loopback_Control,
Playback_Upper_Base_Count,
Playback_Lower_Base_Count,
Alternate_Feature_Enable_I,
Alternate_Feature_Enable_II,
Left_Line_Input_Control,
Right_Line_Input_Control,
Timer_Low_Base,
Timer_High_Base,
RESERVED,
Alternate_Feature_Enable_III,
Alternate_Feature_Status,
Version_Chip_ID,
Mono_Input_And_Output_Control,
RESERVED_2,
Capture_Data_Format,
RESERVED_3,
Capture_Upper_Base_Count,
Capture_Lower_Base_Count
};
static int freqs[2][8] = {
{ 8000, 16000, 27420, 32000, -1, -1, 48000, 9000 },
{ 5510, 11025, 18900, 22050, 37800, 44100, 33075, 6620 }
};
/* Tables courtesy http://hazelware.luggle.com/tutorials/mulawcompression.html */
static int16_t MuLawDecompressTable[256] =
{
-32124,-31100,-30076,-29052,-28028,-27004,-25980,-24956,
-23932,-22908,-21884,-20860,-19836,-18812,-17788,-16764,
-15996,-15484,-14972,-14460,-13948,-13436,-12924,-12412,
-11900,-11388,-10876,-10364, -9852, -9340, -8828, -8316,
-7932, -7676, -7420, -7164, -6908, -6652, -6396, -6140,
-5884, -5628, -5372, -5116, -4860, -4604, -4348, -4092,
-3900, -3772, -3644, -3516, -3388, -3260, -3132, -3004,
-2876, -2748, -2620, -2492, -2364, -2236, -2108, -1980,
-1884, -1820, -1756, -1692, -1628, -1564, -1500, -1436,
-1372, -1308, -1244, -1180, -1116, -1052, -988, -924,
-876, -844, -812, -780, -748, -716, -684, -652,
-620, -588, -556, -524, -492, -460, -428, -396,
-372, -356, -340, -324, -308, -292, -276, -260,
-244, -228, -212, -196, -180, -164, -148, -132,
-120, -112, -104, -96, -88, -80, -72, -64,
-56, -48, -40, -32, -24, -16, -8, 0,
32124, 31100, 30076, 29052, 28028, 27004, 25980, 24956,
23932, 22908, 21884, 20860, 19836, 18812, 17788, 16764,
15996, 15484, 14972, 14460, 13948, 13436, 12924, 12412,
11900, 11388, 10876, 10364, 9852, 9340, 8828, 8316,
7932, 7676, 7420, 7164, 6908, 6652, 6396, 6140,
5884, 5628, 5372, 5116, 4860, 4604, 4348, 4092,
3900, 3772, 3644, 3516, 3388, 3260, 3132, 3004,
2876, 2748, 2620, 2492, 2364, 2236, 2108, 1980,
1884, 1820, 1756, 1692, 1628, 1564, 1500, 1436,
1372, 1308, 1244, 1180, 1116, 1052, 988, 924,
876, 844, 812, 780, 748, 716, 684, 652,
620, 588, 556, 524, 492, 460, 428, 396,
372, 356, 340, 324, 308, 292, 276, 260,
244, 228, 212, 196, 180, 164, 148, 132,
120, 112, 104, 96, 88, 80, 72, 64,
56, 48, 40, 32, 24, 16, 8, 0
};
static int16_t ALawDecompressTable[256] =
{
-5504, -5248, -6016, -5760, -4480, -4224, -4992, -4736,
-7552, -7296, -8064, -7808, -6528, -6272, -7040, -6784,
-2752, -2624, -3008, -2880, -2240, -2112, -2496, -2368,
-3776, -3648, -4032, -3904, -3264, -3136, -3520, -3392,
-22016,-20992,-24064,-23040,-17920,-16896,-19968,-18944,
-30208,-29184,-32256,-31232,-26112,-25088,-28160,-27136,
-11008,-10496,-12032,-11520,-8960, -8448, -9984, -9472,
-15104,-14592,-16128,-15616,-13056,-12544,-14080,-13568,
-344, -328, -376, -360, -280, -264, -312, -296,
-472, -456, -504, -488, -408, -392, -440, -424,
-88, -72, -120, -104, -24, -8, -56, -40,
-216, -200, -248, -232, -152, -136, -184, -168,
-1376, -1312, -1504, -1440, -1120, -1056, -1248, -1184,
-1888, -1824, -2016, -1952, -1632, -1568, -1760, -1696,
-688, -656, -752, -720, -560, -528, -624, -592,
-944, -912, -1008, -976, -816, -784, -880, -848,
5504, 5248, 6016, 5760, 4480, 4224, 4992, 4736,
7552, 7296, 8064, 7808, 6528, 6272, 7040, 6784,
2752, 2624, 3008, 2880, 2240, 2112, 2496, 2368,
3776, 3648, 4032, 3904, 3264, 3136, 3520, 3392,
22016, 20992, 24064, 23040, 17920, 16896, 19968, 18944,
30208, 29184, 32256, 31232, 26112, 25088, 28160, 27136,
11008, 10496, 12032, 11520, 8960, 8448, 9984, 9472,
15104, 14592, 16128, 15616, 13056, 12544, 14080, 13568,
344, 328, 376, 360, 280, 264, 312, 296,
472, 456, 504, 488, 408, 392, 440, 424,
88, 72, 120, 104, 24, 8, 56, 40,
216, 200, 248, 232, 152, 136, 184, 168,
1376, 1312, 1504, 1440, 1120, 1056, 1248, 1184,
1888, 1824, 2016, 1952, 1632, 1568, 1760, 1696,
688, 656, 752, 720, 560, 528, 624, 592,
944, 912, 1008, 976, 816, 784, 880, 848
};
static void cs4231a_reset (DeviceState *dev)
{
CSState *s = CS4231A (dev);
s->regs[Index_Address] = 0x40;
s->regs[Index_Data] = 0x00;
s->regs[Status] = 0x00;
s->regs[PIO_Data] = 0x00;
s->dregs[Left_ADC_Input_Control] = 0x00;
s->dregs[Right_ADC_Input_Control] = 0x00;
s->dregs[Left_AUX1_Input_Control] = 0x88;
s->dregs[Right_AUX1_Input_Control] = 0x88;
s->dregs[Left_AUX2_Input_Control] = 0x88;
s->dregs[Right_AUX2_Input_Control] = 0x88;
s->dregs[Left_DAC_Output_Control] = 0x80;
s->dregs[Right_DAC_Output_Control] = 0x80;
s->dregs[FS_And_Playback_Data_Format] = 0x00;
s->dregs[Interface_Configuration] = 0x08;
s->dregs[Pin_Control] = 0x00;
s->dregs[Error_Status_And_Initialization] = 0x00;
s->dregs[MODE_And_ID] = 0x8a;
s->dregs[Loopback_Control] = 0x00;
s->dregs[Playback_Upper_Base_Count] = 0x00;
s->dregs[Playback_Lower_Base_Count] = 0x00;
s->dregs[Alternate_Feature_Enable_I] = 0x00;
s->dregs[Alternate_Feature_Enable_II] = 0x00;
s->dregs[Left_Line_Input_Control] = 0x88;
s->dregs[Right_Line_Input_Control] = 0x88;
s->dregs[Timer_Low_Base] = 0x00;
s->dregs[Timer_High_Base] = 0x00;
s->dregs[RESERVED] = 0x00;
s->dregs[Alternate_Feature_Enable_III] = 0x00;
s->dregs[Alternate_Feature_Status] = 0x00;
s->dregs[Version_Chip_ID] = 0xa0;
s->dregs[Mono_Input_And_Output_Control] = 0xa0;
s->dregs[RESERVED_2] = 0x00;
s->dregs[Capture_Data_Format] = 0x00;
s->dregs[RESERVED_3] = 0x00;
s->dregs[Capture_Upper_Base_Count] = 0x00;
s->dregs[Capture_Lower_Base_Count] = 0x00;
}
static void cs_audio_callback (void *opaque, int free)
{
CSState *s = opaque;
s->audio_free = free;
}
static void cs_reset_voices (CSState *s, uint32_t val)
{
int xtal;
struct audsettings as;
#ifdef DEBUG_XLAW
if (val == 0 || val == 32)
val = (1 << 4) | (1 << 5);
#endif
xtal = val & 1;
as.freq = freqs[xtal][(val >> 1) & 7];
if (as.freq == -1) {
lerr ("unsupported frequency (val=%#x)\n", val);
goto error;
}
as.nchannels = (val & (1 << 4)) ? 2 : 1;
as.endianness = 0;
s->tab = NULL;
switch ((val >> 5) & ((s->dregs[MODE_And_ID] & MODE2) ? 7 : 3)) {
case 0:
as.fmt = AUD_FMT_U8;
s->shift = as.nchannels == 2;
break;
case 1:
s->tab = MuLawDecompressTable;
goto x_law;
case 3:
s->tab = ALawDecompressTable;
x_law:
as.fmt = AUD_FMT_S16;
as.endianness = AUDIO_HOST_ENDIANNESS;
s->shift = as.nchannels == 2;
break;
case 6:
as.endianness = 1;
case 2:
as.fmt = AUD_FMT_S16;
s->shift = as.nchannels;
break;
case 7:
case 4:
lerr ("attempt to use reserved format value (%#x)\n", val);
goto error;
case 5:
lerr ("ADPCM 4 bit IMA compatible format is not supported\n");
goto error;
}
s->voice = AUD_open_out (
&s->card,
s->voice,
"cs4231a",
s,
cs_audio_callback,
&as
);
if (s->dregs[Interface_Configuration] & PEN) {
if (!s->dma_running) {
DMA_hold_DREQ (s->dma);
AUD_set_active_out (s->voice, 1);
s->transferred = 0;
}
s->dma_running = 1;
}
else {
if (s->dma_running) {
DMA_release_DREQ (s->dma);
AUD_set_active_out (s->voice, 0);
}
s->dma_running = 0;
}
return;
error:
if (s->dma_running) {
DMA_release_DREQ (s->dma);
AUD_set_active_out (s->voice, 0);
}
}
static uint64_t cs_read (void *opaque, hwaddr addr, unsigned size)
{
CSState *s = opaque;
uint32_t saddr, iaddr, ret;
saddr = addr;
iaddr = ~0U;
switch (saddr) {
case Index_Address:
ret = s->regs[saddr] & ~0x80;
break;
case Index_Data:
if (!(s->dregs[MODE_And_ID] & MODE2))
iaddr = s->regs[Index_Address] & 0x0f;
else
iaddr = s->regs[Index_Address] & 0x1f;
ret = s->dregs[iaddr];
if (iaddr == Error_Status_And_Initialization) {
/* keep SEAL happy */
if (s->aci_counter) {
ret |= 1 << 5;
s->aci_counter -= 1;
}
}
break;
default:
ret = s->regs[saddr];
break;
}
dolog ("read %d:%d -> %d\n", saddr, iaddr, ret);
return ret;
}
static void cs_write (void *opaque, hwaddr addr,
uint64_t val64, unsigned size)
{
CSState *s = opaque;
uint32_t saddr, iaddr, val;
saddr = addr;
val = val64;
switch (saddr) {
case Index_Address:
if (!(s->regs[Index_Address] & MCE) && (val & MCE)
&& (s->dregs[Interface_Configuration] & (3 << 3)))
s->aci_counter = conf.aci_counter;
s->regs[Index_Address] = val & ~(1 << 7);
break;
case Index_Data:
if (!(s->dregs[MODE_And_ID] & MODE2))
iaddr = s->regs[Index_Address] & 0x0f;
else
iaddr = s->regs[Index_Address] & 0x1f;
switch (iaddr) {
case RESERVED:
case RESERVED_2:
case RESERVED_3:
lwarn ("attempt to write %#x to reserved indirect register %d\n",
val, iaddr);
break;
case FS_And_Playback_Data_Format:
if (s->regs[Index_Address] & MCE) {
cs_reset_voices (s, val);
}
else {
if (s->dregs[Alternate_Feature_Status] & PMCE) {
val = (val & ~0x0f) | (s->dregs[iaddr] & 0x0f);
cs_reset_voices (s, val);
}
else {
lwarn ("[P]MCE(%#x, %#x) is not set, val=%#x\n",
s->regs[Index_Address],
s->dregs[Alternate_Feature_Status],
val);
break;
}
}
s->dregs[iaddr] = val;
break;
case Interface_Configuration:
val &= ~(1 << 5); /* D5 is reserved */
s->dregs[iaddr] = val;
if (val & PPIO) {
lwarn ("PIO is not supported (%#x)\n", val);
break;
}
if (val & PEN) {
if (!s->dma_running) {
cs_reset_voices (s, s->dregs[FS_And_Playback_Data_Format]);
}
}
else {
if (s->dma_running) {
DMA_release_DREQ (s->dma);
AUD_set_active_out (s->voice, 0);
s->dma_running = 0;
}
}
break;
case Error_Status_And_Initialization:
lwarn ("attempt to write to read only register %d\n", iaddr);
break;
case MODE_And_ID:
dolog ("val=%#x\n", val);
if (val & MODE2)
s->dregs[iaddr] |= MODE2;
else
s->dregs[iaddr] &= ~MODE2;
break;
case Alternate_Feature_Enable_I:
if (val & TE)
lerr ("timer is not yet supported\n");
s->dregs[iaddr] = val;
break;
case Alternate_Feature_Status:
if ((s->dregs[iaddr] & PI) && !(val & PI)) {
/* XXX: TI CI */
qemu_irq_lower (s->pic);
s->regs[Status] &= ~INT;
}
s->dregs[iaddr] = val;
break;
case Version_Chip_ID:
lwarn ("write to Version_Chip_ID register %#x\n", val);
s->dregs[iaddr] = val;
break;
default:
s->dregs[iaddr] = val;
break;
}
dolog ("written value %#x to indirect register %d\n", val, iaddr);
break;
case Status:
if (s->regs[Status] & INT) {
qemu_irq_lower (s->pic);
}
s->regs[Status] &= ~INT;
s->dregs[Alternate_Feature_Status] &= ~(PI | CI | TI);
break;
case PIO_Data:
lwarn ("attempt to write value %#x to PIO register\n", val);
break;
}
}
static int cs_write_audio (CSState *s, int nchan, int dma_pos,
int dma_len, int len)
{
int temp, net;
uint8_t tmpbuf[4096];
temp = len;
net = 0;
while (temp) {
int left = dma_len - dma_pos;
int copied;
size_t to_copy;
to_copy = audio_MIN (temp, left);
if (to_copy > sizeof (tmpbuf)) {
to_copy = sizeof (tmpbuf);
}
copied = DMA_read_memory (nchan, tmpbuf, dma_pos, to_copy);
if (s->tab) {
int i;
int16_t linbuf[4096];
for (i = 0; i < copied; ++i)
linbuf[i] = s->tab[tmpbuf[i]];
copied = AUD_write (s->voice, linbuf, copied << 1);
copied >>= 1;
}
else {
copied = AUD_write (s->voice, tmpbuf, copied);
}
temp -= copied;
dma_pos = (dma_pos + copied) % dma_len;
net += copied;
if (!copied) {
break;
}
}
return net;
}
static int cs_dma_read (void *opaque, int nchan, int dma_pos, int dma_len)
{
CSState *s = opaque;
int copy, written;
int till = -1;
copy = s->voice ? (s->audio_free >> (s->tab != NULL)) : dma_len;
if (s->dregs[Pin_Control] & IEN) {
till = (s->dregs[Playback_Lower_Base_Count]
| (s->dregs[Playback_Upper_Base_Count] << 8)) << s->shift;
till -= s->transferred;
copy = audio_MIN (till, copy);
}
if ((copy <= 0) || (dma_len <= 0)) {
return dma_pos;
}
written = cs_write_audio (s, nchan, dma_pos, dma_len, copy);
dma_pos = (dma_pos + written) % dma_len;
s->audio_free -= (written << (s->tab != NULL));
if (written == till) {
s->regs[Status] |= INT;
s->dregs[Alternate_Feature_Status] |= PI;
s->transferred = 0;
qemu_irq_raise (s->pic);
}
else {
s->transferred += written;
}
return dma_pos;
}
static int cs4231a_pre_load (void *opaque)
{
CSState *s = opaque;
if (s->dma_running) {
DMA_release_DREQ (s->dma);
AUD_set_active_out (s->voice, 0);
}
s->dma_running = 0;
return 0;
}
static int cs4231a_post_load (void *opaque, int version_id)
{
CSState *s = opaque;
if (s->dma_running && (s->dregs[Interface_Configuration] & PEN)) {
s->dma_running = 0;
cs_reset_voices (s, s->dregs[FS_And_Playback_Data_Format]);
}
return 0;
}
static const VMStateDescription vmstate_cs4231a = {
.name = "cs4231a",
.version_id = 1,
.minimum_version_id = 1,
.pre_load = cs4231a_pre_load,
.post_load = cs4231a_post_load,
.fields = (VMStateField[]) {
VMSTATE_UINT32_ARRAY (regs, CSState, CS_REGS),
VMSTATE_BUFFER (dregs, CSState),
VMSTATE_INT32 (dma_running, CSState),
VMSTATE_INT32 (audio_free, CSState),
VMSTATE_INT32 (transferred, CSState),
VMSTATE_INT32 (aci_counter, CSState),
VMSTATE_END_OF_LIST ()
}
};
static const MemoryRegionOps cs_ioport_ops = {
.read = cs_read,
.write = cs_write,
.impl = {
.min_access_size = 1,
.max_access_size = 1,
}
};
static void cs4231a_initfn (Object *obj)
{
CSState *s = CS4231A (obj);
memory_region_init_io (&s->ioports, OBJECT(s), &cs_ioport_ops, s,
"cs4231a", 4);
}
static void cs4231a_realizefn (DeviceState *dev, Error **errp)
{
ISADevice *d = ISA_DEVICE (dev);
CSState *s = CS4231A (dev);
isa_init_irq (d, &s->pic, s->irq);
isa_register_ioport (d, &s->ioports, s->port);
DMA_register_channel (s->dma, cs_dma_read, s);
AUD_register_card ("cs4231a", &s->card);
}
static int cs4231a_init (ISABus *bus)
{
isa_create_simple (bus, TYPE_CS4231A);
return 0;
}
static Property cs4231a_properties[] = {
DEFINE_PROP_UINT32 ("iobase", CSState, port, 0x534),
DEFINE_PROP_UINT32 ("irq", CSState, irq, 9),
DEFINE_PROP_UINT32 ("dma", CSState, dma, 3),
DEFINE_PROP_END_OF_LIST (),
};
static void cs4231a_class_initfn (ObjectClass *klass, void *data)
{
DeviceClass *dc = DEVICE_CLASS (klass);
dc->realize = cs4231a_realizefn;
dc->reset = cs4231a_reset;
set_bit(DEVICE_CATEGORY_SOUND, dc->categories);
dc->desc = "Crystal Semiconductor CS4231A";
dc->vmsd = &vmstate_cs4231a;
dc->props = cs4231a_properties;
}
static const TypeInfo cs4231a_info = {
.name = TYPE_CS4231A,
.parent = TYPE_ISA_DEVICE,
.instance_size = sizeof (CSState),
.instance_init = cs4231a_initfn,
.class_init = cs4231a_class_initfn,
};
static void cs4231a_register_types (void)
{
type_register_static (&cs4231a_info);
isa_register_soundhw("cs4231a", "CS4231A", cs4231a_init);
}
type_init (cs4231a_register_types)
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